First of all welcome to the BENGS CLUB. Dont be angry so fast, see you double posting
The way you dump in your chap pa lang questions are all heresay from your frens. Everyone in Singapore are very stressful, call cheekon oso must know how old, ppl in SHC are nice Ah Bengs, you got to meet them to know better.I was a noob like you before but I know alot more after joining SHC, MCDS and other bros here. Wifey kun liao nobody disturb, reading your thread, macham like you are hurrying to mod your ES to a Veyron. Do it one at a time and if anything goes wrong you know wat to revert. Our ES D16/17 engines has limitations, our onboard ECU is very stubborn, like a old spinster, die die wont open legs, very hard to squeeze more hp out of it, even it does 'illegally', surely will burn a big hole in your pocket. It arrive in Singapore almost 90% max liao after all the cost cutting by agent.
Honda has already move towards Green Technology. Vtec is a smart valve timing system like putting two engines into one, and they are even able to Vtec a single cam engine, thats our ES. EO is important for our high compression engine. Comprendo.
Our ES already got a built in CAI, behind a heat shealthed battery unless you wanna run a CAI right at the side or bottom of the bumper but cant stop it from taking in water if it rains heavily or even flood. Den more air means more fuel. For auto ES stock airbox is best all rounder for low and high.
Since you have done your muffler just live with it, decating is illegal, TP can easily smell you out miles away and carries a heavy fine, bad for environment. Its good to install a TPMS, saves you a lot of trouble of walking round your car every morning to check tyres. Forget about the Cyclone or Typoon its just another indian snake oil.
Walau eh krado, your long life coolant scroll buay liao lei, soooooo big on my tablet.
Nobody will poke a stick into the reservior to check the coolant level, it is just a spare tank, so diluted with water sure cant see. open the radiator cap, as long there is visible coolant around its safe, provided your engine dont overheat on the temp gauge. Dont over fill the tank.
In the past engines are less complicated and made of cast iron, todays engines are cast in alloy so protecting it and preventing the engine from warping is the ultimum thus using premix long life coolant is the choice but recommended 'honda' but some bros here uses Toyota long life coolant, can forget about anti freeze in our climate but dont add water. I flush mine every 2-3yrs.
You can travel another 80km on the highway when empty fuel lights up, provided the sensor works perfectly. The rest of your doubts krado already answer you.
Hopefully I dont misled and fed you wif wrong info as I posted wif best of my knowledge of almost 9yrs ES5 ownership.
Dont let your fren shoot you to Holland, our ES days are numbered, save up your money if COE does drop get a performance car once 10years up.
Come for meetup, you want can try their rides wif diff mods, dead stock you can try mine.
btw our last meetup ends at 3am 
